init: having keywords without value is not a global error.

We may later add a new configuration variable in "init" section that takes
a boolean value.  Erroring out at the beginning of the config parser makes
life harder for later enhancement.

The existing configuration variable is parsed by git_config_pathname()
that checks and rejects init.templatedir that is unset without this extra
check.  Remove it.

Signed-off-by: Steven Drake <sdrake@xnet.co.nz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-init-db.c

@@ -170,8 +170,6 @@ static void copy_templates(const char *template_dir)
 
 static int git_init_db_config(const char *k, const char *v, void *cb)
 {
-	if (!v)
-		return config_error_nonbool(k);
 	if (!strcmp(k, "init.templatedir"))
 		return git_config_pathname(&init_db_template_dir, k, v);